import axios from "axios";

// 设置请求超时时间和域名

axios.defaults.timeout = 5000;

axios.defaults.baseURL = "";

//  http request 拦截器

axios.interceptors.request.use(
  config => {
    config.data = JSON.stringify(config.data);

    config.headers = {
      "Content-Type": "application/x-www-form-urlencoded"
    };

    return config;
  },
  err => {
    return Promise.reject(err);
  }
);

//  响应拦截器即异常处理

axios.interceptors.response.use(
  response => {
    return response;
  },
  err => {
    if (err && err.response) {
      switch (err.response.status) {
        case 400:
          console.log("错误请求");

          break;

        case 401:
          console.log("未授权，请重新登录");

          break;

        case 403:
          console.log("拒绝访问");

          break;

        case 404:
          console.log("请求错误,未找到该资源");

          break;

        case 405:
          console.log("请求方法未允许");

          break;

        case 408:
          console.log("请求超时");

          break;

        case 500:
          console.log("服务器端出错");

          break;

        case 501:
          console.log("网络未实现");

          break;

        case 502:
          console.log("网络错误");

          break;

        case 503:
          console.log("服务不可用");

          break;

        case 504:
          console.log("网络超时");

          break;

        case 505:
          console.log("http版本不支持该请求");

          break;

        default:
          console.log(`连接错误${err.response.status}`);
      }
    } else {
      console.log("连接到服务器失败");
    }

    return Promise.resolve(err.response);
  }
);

/**

* 封装get方法

* @param url

* @param data

* @returns {Promise}

*/

function get(url, params = {}) {
  return new Promise((resolve, reject) => {
    axios
      .get(url, { params: params })

      .then(response => {
        resolve(response.data);
      })

      .catch(err => {
        reject(err);
      });
  });
}

/**

* 封装post请求

* @param url

* @param data

* @returns {Promise}

*/

function post(url, data = {}) {
  return new Promise((resolve, reject) => {
    axios
      .post(url, data)

      .then(
        response => {
          resolve(response.data);
        },
        err => {
          reject(err);
        }
      );
  });
}

/**

* 封装patch请求

* @param url

* @param data

* @returns {Promise}

*/

function patch(url, data = {}) {
  return new Promise((resolve, reject) => {
    axios
      .patch(url, data)

      .then(
        response => {
          resolve(response.data);
        },
        err => {
          reject(err);
        }
      );
  });
}

/**

* 封装put请求

* @param url

* @param data

* @returns {Promise}

*/

function put(url, data = {}) {
  return new Promise((resolve, reject) => {
    axios
      .put(url, data)

      .then(
        response => {
          resolve(response.data);
        },
        err => {
          reject(err);
        }
      );
  });
}

//  开放接口

export default {
  get: get,
  post: post,
  put: put,
  patch: patch
};
